There are some features of sccs implementations with which
cssc cannot maintain compatibility.
- The cssc behaviour of correcting the problems mentioned above may
not be compatible with those versions of sccs which actually
exhibit those problems (then again, some of them are not able to read
their own output in these circumstances, either).
- The BitSCCS product, part of the BitKeeper suite, uses special comment
lines in the delta table, of the form “^Ac_” where “_” is some
character other than a space. When cssc sees these, it will
avoid changing the SCCS file (though it will still work for read-only
operations, even though the significance of the special comment is
ignored). File flags which are specific to BitKeeper are also treated
in this way.